Front Matter
p. 0
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The pH, Carbon Dioxide Tension, and the Hemoglobin Percentages of Venous Blood of Various Fresh Water Fishes
Powers, Edwin B.; Rostorfer, Howard H.; Rostorfer, Theresa H. pp. 1-9
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Book Notices
p. 9
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Short Studies on the Histeridae (Coleop.)-No. 2
Wenzel, Rupert L. pp. 10-14
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The Hydrogen-Ion Concentration of the Soil in Relation to Flora at Squire Valleevue Farm
Hodgman, Margaret Elizabeth pp. 15-26
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Dissolved Oxygen Profiles at Norris Dam and in the Big Creek Sector of Norris Reservoir (1937), with a Note on the Oxygen Demand of the Water (1938)
Wiebe, A. H. pp. 27-36
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Book Notices
p. 36
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Variation in Moniezia Expansa Rudolphi
Williams, Stephen R. pp. 37-42
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Book Notices
p. 42
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Snowfall Maps of Ohio
Carlson, Fred A. pp. 43-47
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Spiders and Insects Found Associated with Sweet Corn, with Notes on the Food and Habits of Some of the Species. III, Hymenoptera
Everly, Ray Thomas pp. 48-51
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Book Notices
p. 51
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Spiders and Insects Found Associated with Sweet Corn, with Notes on the Food and Habits of Some Species. IV, Diptera and Hemiptera
Everly, Ray Thomas pp. 52-56
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Book Notices
p. 56
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The Digestive System of Macrosiphum Solanifilii (Ash.) (Aphidae: Homoptera)
Smith, Clyde F. pp. 57-59
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Book Notices
pp. 60-66
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Back Matter
p. 999
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